CVE-2026-6554

{"id": "CVE-2026-6554", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-6554", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-08T15:14:56.820512Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@tcpdump.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.5, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.8}]}, "affected": [{"source": "security@tcpdump.org", "affectedData": [{"repo": "https://github.com/the-tcpdump-group/libpcap/", "vendor": "The Tcpdump Group", "modules": ["BPF interpreter"], "product": "libpcap", "versions": [{"status": "affected", "version": "0", "lessThan": "1.10.7", "versionType": "semver"}], "programFiles": ["bpf_filter.c"], "defaultStatus": "unaffected", "programRoutines": [{"name": "pcapint_filter_with_aux_data()"}]}]}], "published": "2026-09-05T19:16:56.067", "references": [{"url": "https://github.com/the-tcpdump-group/libpcap/commit/ff3c83475ac303c6b681c52ad0b6e14795a8e0ce", "source": "security@tcpdump.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "security@tcpdump.org", "description": [{"lang": "en", "value": "CWE-835"}]}], "descriptions": [{"lang": "en", "value": "libpcap BPF interpreter treats the offset in the 'ja L' BPF instruction as a signed integer to implement looping via backward jumps, but it does not limit the number of loop iterations. In particular uncommon use cases a crafted filter program can cause the interpreter to loop infinitely."}], "lastModified": "2026-09-08T19:20:25.117", "sourceIdentifier": "security@tcpdump.org"}